Flat panel display

Abstract

A flat panel display is provided. A first metal joining surface on a display panel includes a first transverse part and a first longitudinal part, and the area occupied by the first transverse part along a transverse direction is larger than the area occupied by the first longitudinal part along the transverse direction. A second metal joining surface on a flexible wiring substrate includes a second transverse part and a second longitudinal part, and the area occupied by the second transverse part along the transverse direction is larger than the area occupied by the second longitudinal part along the transverse direction. The above design can increase the contact area between the first metal joining surface and the second metal joining surface after the expanding offset between the display panel and the flexible wiring substrate occurring in a thermal joining process, to guarantee electrical signals transmitting normally and improve displaying effect.

What is claimed is: 
     
       1. A flat panel display, comprising:
 a display panel; 
 a flexible wiring substrate; 
 wherein the display panel includes a display area and a bonding area arranged at outside of the display area, and the flexible wiring substrate and the display panel are joined together at the bonding area; 
 wherein the display panel includes multiple first metal joining surfaces in the bonding area, the flexible wiring substrate includes multiple second metal joining surfaces in an area thereon corresponding to the bonding area, and one the first metal joining surface and one the second metal joining surface corresponding thereto are joined to form an electrical contact; 
 wherein the first metal joining surface and the second metal joining surface have a same shape; 
 wherein the first metal joining surface includes a first transverse part arranged transversely and a first longitudinal part connected vertically to the first transverse part, and an area occupied by the first transverse part along a transverse direction is larger than an area occupied by the first longitudinal part along the transverse direction; and 
 wherein the second metal joining surface includes a second transverse part arranged transversely and a second longitudinal part connected vertically to the second transverse part, and an area occupied by the second transverse part along the transverse direction is larger than an area occupied by the second longitudinal part along the transverse direction; 
 wherein the multiple first metal joining surfaces and the multiple second metal joining surfaces both are arranged in multiple rows; wherein the first longitudinal part of one of two adjacent the first metal joining surfaces in a same row is extending downward, and the first longitudinal part of the other of two adjacent the first metal joining surfaces in the same row is extending upward; wherein the second longitudinal part of one of two adjacent the second metal joining surfaces in a same row is extending downward, and the second longitudinal part of the other of two adjacent the second metal joining surfaces in the same row is extending upward. 
 
     
     
       2. The flat panel display according to  claim 1 , wherein the first metal joining surface and the second metal joining surface are L-shaped or reverse L-shaped, and the first longitudinal part is connected vertically to an end of the first transverse part, the second longitudinal part is connected vertically to an end of the second transverse part. 
     
     
       3. The flat panel display according to  claim 1 , wherein the first metal joining surface and the second metal joining surface are T-shaped or reverse T-shaped, and the first longitudinal part is connected vertically to a middle of the first transverse part, the second longitudinal part is connected vertically to a middle of the second transverse part. 
     
     
       4. The flat panel display according to  claim 1 , wherein an expansion coefficient of the flexible wiring substrate is larger than an expansion coefficient of the display panel. 
     
     
       5. The flat panel display according to  claim 4 , wherein the second metal joining surface is performed by a pre-shrink process relative to the first metal joining surface. 
     
     
       6. The flat panel display according to  claim 4 , wherein the flexible wiring substrate is a chip on film (COF) or a flexible printed circuit (FPC). 
     
     
       7. A flat panel display, comprising:
 a display panel; 
 a flexible wiring substrate; 
 wherein the display panel includes a display area and a bonding area arranged at outside of the display area, and the flexible wiring substrate and the display panel are joined together at the bonding area; 
 wherein the display panel includes multiple first metal joining surfaces in the bonding area, the flexible wiring substrate includes multiple second metal joining surfaces in an area thereon corresponding to the bonding area, and one the first metal joining surface and one the second metal joining surface corresponding thereto are joined to form an electrical contact; 
 wherein the first metal joining surface and the second metal joining surface have a same shape; 
 wherein the first metal joining surface includes a first transverse part arranged transversely and a first longitudinal part connected vertically to the first transverse part, and an area occupied by the first transverse part along a transverse direction is larger than an area occupied by the first longitudinal part along the transverse direction; 
 wherein the second metal joining surface includes a second transverse part arranged transversely and a second longitudinal part connected vertically to the second transverse part, and an area occupied by the second transverse part along the transverse direction is larger than an area occupied by the second longitudinal part along the transverse direction; 
 wherein an expansion coefficient of the flexible wiring substrate is larger than an expansion coefficient of the display panel; 
 wherein the second metal joining surface is performed by a pre-shrink process relative to the first metal joining surface; 
 wherein the flexible wiring substrate is a chip on film (COF) or a flexible printed circuit (FPC); and 
 wherein the multiple first metal joining surfaces and the multiple second metal joining surfaces both are arranged in multiple rows; wherein the first longitudinal part of one of two adjacent the first metal joining surfaces in a same row is extending downward, and the first longitudinal part of the other of two adjacent the first metal joining surfaces in the same row is extending upward; wherein the second longitudinal part of one of two adjacent the second metal joining surfaces in a same row is extending downward, and the second longitudinal part of the other of two adjacent the second metal joining surfaces in the same row is extending upward. 
 
     
     
       8. The flat panel display according to  claim 7 , wherein the first metal joining surface and the second metal joining surface are L-shaped or reverse L-shaped, and the first longitudinal part is connected vertically to an end of the first transverse part, the second longitudinal part is connected vertically to an end of the second transverse part. 
     
     
       9. The flat panel display according to  claim 7 , wherein the first metal joining surface and the second metal joining surface are T-shaped or reverse T-shaped, and the first longitudinal part is connected vertically to a middle of the first transverse part, the second longitudinal part is connected vertically to a middle of the second transverse part.